"Japanese people have been taught to believe that it is a virtue to simply abide by the rules," she said. "I hope this will be an opportunity for people to discuss what we should do to create a society where rules are observed in a way that's acceptable to everyone." The debate over strict dress codes intensified several years ago after a high school student, then aged 18, sued education authorities in Osaka after her school had told her to dye her naturally brown hair black or face exclusion. Last year, the Osaka district court rejected her claim that she had been forced to dye her hair, but said the removal of her desk and name from the roster after she stopped attending classes had been unreasonable. It ordered the board of education to pay her ¥330,000 [£2,152] in compensation. Last year, all public high schools in Mie, a prefecture in western Japan, abolished rules governing hairstyles, underwear colour and dating, with local officials conceding that the requirements were "relics" from a different age.